Point reading ink, its preparation method and application

Abstract

The application provides a point-reading ink as well as a preparation method and application thereof. The point-reading ink comprises the following raw materials in percentage by mass: 40-50wt% modified phenolic resin oil, 20-30wt% soybean oil, 2-3wt% drier, 0.5-1wt% polyethylene wax, 1-1.5wt% anti-skinning agent, 10-15wt% nano calcium carbonate, 0.5-1.5wt% heat stabilizer, 0.5-1wt% black pigment and 4-5wt% metal pigment. In order to ensure the sensitive identification performance of the point-reading code ink, one or two or even multiple metal materials are added in the application, so that the certain conductive performance of the ink is ensured, thereby the sensitive reading and writing effect of the point-reading pen is ensured. In the ink formula, the amount of carbon black material is greatly reduced, the color density of the ink is greatly reduced, the background color of the reading book is reduced, the reading book has higher aesthetics, and the reading pleasure of the reader is improved.

Description

Technical Field

[0001] This application relates to the field of ink technology, and in particular to a reading ink, its preparation method, printed materials, and the application of the reading ink in reading books. Background Technology

[0002] Currently, most reading inks on the market are composed of black. The black reading code uses the conductivity of carbon black to transmit the reading information to the reading pen. After the chip of the reading pen reads and writes the information, it emits a pre-written voice, thus completing the reading and writing effect of the reading ink.

[0003] With the increasing competition among functional products in the market, the competition for differentiation in many product segments, including materials, is also intensifying. Black, as a commonly used ink for digital reading, has always affected the aesthetics of reading materials and the reader's enjoyment due to its overly dark background.

[0004] Many ink suppliers have been trying to improve the problem of excessively dark ink for digital barcodes. However, when many products are printed, the digital barcode color becomes lighter, and the digital pen cannot recognize the information of the digital barcode. Therefore, so far, the digital barcode ink on the market is mainly black.

[0005] The content of the background section is merely the technology known to the inventor and does not necessarily represent the prior art in this field. Summary of the Invention

[0006] To address at least one of the problems of the prior art described above, the first objective of this application is to provide a reading ink comprising the following raw materials in weight percentages:

[0007] 40–50 wt% modified phenolic resin oil, 20–30 wt% soybean oil, 2–3 wt% drying agent, 0.5–1 wt% polyethylene wax, 1–1.5 wt% anti-skinning agent, 10–15 wt% nano calcium carbonate, 0.5–1.5 wt% heat stabilizer, 0.5–1 wt% black pigment and 4–5 wt% metallic pigment.

[0008] In some embodiments of this application, the black pigment is Evonik Degussa SPECIAL BLACK 4A.

[0009] In some embodiments of this application, the metallic pigment is selected from one or more of aluminum, copper, zinc, silver, iron, and their oxides.

[0010] In some embodiments of this application, the particle size of the nano-calcium carbonate is 5000-12000 mesh.

[0011] In some embodiments of this application, the modified phenolic resin oil includes one or more of fatty acid modified phenolic resin, rosin modified phenolic resin, polyamide modified phenolic resin, soybean oil modified phenolic resin, epoxy modified phenolic resin, and drying oil modified phenolic resin.

[0012] In some embodiments of this application, the particle size of the reading ink is <5μm.

[0013] A second objective of this application is to provide a method for preparing ink as described in any of the above-described methods, comprising the following steps:

[0014] S1: Mix modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano-calcium carbonate, heat stabilizer, black pigment, and metallic pigment, stir evenly, and let stand for a predetermined time to allow the mixed pigments to be fully wetted; and

[0015] S2: Grind the mixed pigment after the predetermined time to make the mixed pigment reach the predetermined fineness.

[0016] In some embodiments of this application, the stirring time is 30-50 minutes, and the predetermined time is >4 hours.

[0017] A third objective of this application is to provide a printed article comprising a substrate and an ink layer, wherein the ink layer is formed by printing the reading ink described above onto the substrate.

[0018] The fourth objective of this application is to provide the application of any of the above-described interactive inks in interactive books.

[0019] To ensure the sensitive recognition performance of the QR code ink, this invention incorporates one, two, or even more metallic materials to guarantee a certain level of conductivity in the ink, thereby ensuring the sensitive reading and writing effect of the reading pen. This invention significantly reduces the amount of carbon black in the ink formula, greatly reducing the ink's color density and the background color of the book, resulting in a more aesthetically pleasing book and enhancing the reader's reading experience.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure. In the drawings:

[0022] Figure 1 This is a schematic diagram of the process flow for preparing ink according to an embodiment of the present invention.

[0023] Figure 2 and Figure 3 The printed matter obtained according to an embodiment of the present invention is shown.

[0024] Figure 4 and Figure 5 The printed matter prepared according to the present invention is shown in the comparative example. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0027] Taking into account the measurements discussed and the errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), as used herein, “about” or “approximately” includes the stated value and means within an acceptable range of deviation from the particular value as determined by a person skilled in the art. For example, “about” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, or ±5% of the stated value.

[0028] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and examples, so as to better understand the solution of the present invention and its advantages in various aspects. However, the specific embodiments and examples described below are for illustrative purposes only and are not intended to limit the present invention.

[0029] The reading ink provided in this application includes the following raw materials: modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano calcium carbonate, heat stabilizer, black pigment and metallic pigment.

[0030] The modified phenolic resin oil content is 40-50 wt%. In some embodiments of this application, its content may be 40 wt%, 42 wt%, 44 wt%, 46 wt%, 48 wt%, or 50 wt%. Optionally, the modified phenolic resin includes one or more of fatty acid modified phenolic resin, rosin modified phenolic resin, polyamide modified phenolic resin, soybean oil modified phenolic resin, epoxy modified phenolic resin, and drying oil modified phenolic resin. Further optionally, the modified phenolic resin oil used in this application is rosin modified phenolic resin oil, such as rosin modified PTBP p-tert-butylphenol resin oil, rosin modified POP p-tert-octylphenol resin oil, and rosin modified bisphenol A resin, etc.

[0031] The soybean oil content is 8-12 wt%. In some embodiments of this application, the content may be 8 wt%, 9 wt%, 10 wt%, 11 wt%, or 12 wt%. Optionally, the soybean oil is a bio-based biodegradable material.

[0032] The content of the drying agent is 2-3 wt%. In some embodiments of this application, the content of the drying agent may be 2 wt%, 2.2 wt%, 2.4 wt%, 2.6 wt%, 2.8 wt%, or 3 wt%. Optionally, the drying agent is manganese isooctanoate.

[0033] The content of polyethylene wax is 0.5-1 wt%. Polyethylene wax mainly serves a wear-resistant function in this invention. In some embodiments of this application, the content of polyethylene wax may be 0.5 wt% or 1 wt%.

[0034] The content of the anti-skinning agent is 1 to 1.5 wt%. In some embodiments of this application, the content of the anti-skinning agent may be 1 wt% or 1.5 wt%. Optionally, the anti-skinning agent is o-methylhydroquinone.

[0035] The content of nano-calcium carbonate is 10-15 wt%. In some embodiments of this application, the content of nano-calcium carbonate may be 10 wt%, 11 wt%, 12 wt%, 13 wt%, 14 wt%, or 15 wt%. Optionally, the particle size of nano-calcium carbonate is 5000-12000 mesh.

[0036] The heat stabilizer content is 0.5–1.5 wt%. In this invention, the heat stabilizer mainly functions to improve ink adhesion. In some embodiments of this application, the heat stabilizer content may be 0.5 wt%, 1 wt%, or 1.5 wt%.

[0037] The pigments used in this application include black pigments and metallic pigments. The content of black pigment is 0.5-1 wt%. In some embodiments of this application, the content of black pigment may be 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, or 1 wt%. Optionally, the black pigment is Evonik Degussa SPECIAL BLACK 4A. The use of less black pigment in this application greatly reduces the color density of the ink, reduces the background color of the book, and makes the book more aesthetically pleasing and enhances the reader's reading experience.

[0038] The content of the metallic pigment is 4-5 wt%. In some embodiments of this application, the content of the metallic pigment may be 4 wt%, 4.2 wt%, 4.4 wt%, 4.6 wt%, 4.8 wt%, or 5 wt%. Optionally, the metallic pigment is selected from one or more of aluminum, copper, silver, zinc, and iron, and their oxides. The addition of metallic materials ensures a certain level of electrical conductivity in the ink, thereby ensuring the sensitive reading and writing performance of the reading pen.

[0039] Optionally, for better printing results, the particle size of the reading ink should be <5μm.

[0040] Figure 1 An embodiment of this application illustrates a method for preparing the above-mentioned reading ink, comprising the following steps S1 and S2.

[0041] S1: Mix the modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano calcium carbonate, heat stabilizer, black pigment and metallic pigment, stir evenly and let stand for a predetermined time to allow the mixed pigments to be fully wetted.

[0042] Optionally, a planetary mixer is used for mixing. Further optionally, the mixing time is 30–50 minutes. In some specific embodiments, the mixing time may be 30 minutes, 35 minutes, 40 minutes, 45 minutes, or 50 minutes.

[0043] Optionally, the time should be longer than 4 hours. Allow the mixed pigments to be fully moistened for at least 4 hours before grinding.

[0044] S2: Grind the mixed pigments after they have been left to stand for a predetermined time, so that the mixed pigments reach the predetermined fineness.

[0045] Optionally, the mixture is ground at least twice using a three-roll mill to achieve a predetermined fineness. The pressure of the three-roll mill can be set according to the fineness requirements, and the fineness is checked using a fineness gauge. Optionally, the predetermined fineness is <5μm.

[0046] Alternatively, the prepared ink can be packaged after removing air bubbles using a three-roll mill.

[0047] This application further provides a printed article comprising a substrate and an ink layer, wherein the ink layer is formed by printing the ink described above onto the substrate. The ink can be printed onto the substrate surface using offset printing.

[0048] This invention also provides the application of the aforementioned interactive ink in interactive books. Because the black pigment content is extremely low, the interactive books provided by this application have a high aesthetic appeal and enhance the reader's reading experience.

[0049] The present invention will now be described with reference to specific embodiments. The process conditions described in the following embodiments are exemplary, and their possible ranges are as shown in the foregoing description of the invention. For process parameters not specifically noted, conventional techniques can be used. Unless otherwise specified, the detection methods used in the following embodiments are conventional detection methods in the industry. Unless otherwise indicated, the reagents and instruments used in the technical solutions provided by the present invention can be purchased from conventional channels or the market.

[0050] Example

[0051] This embodiment prepares a printed product using Golden Sun 157g coated paper as the substrate. The specific preparation steps are as follows:

[0052] First, modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano-calcium carbonate, heat stabilizer, black pigment, and metallic pigment are mixed and stirred evenly according to the mass percentages in Table 1 to obtain a mixed pigment. Then, the mixed pigment is left to stand for 6 hours to allow it to fully wet. Next, the mixed pigment is ground in a three-roll mill to achieve a fineness of less than 5 μm, obtaining the desired ink.

[0053] 0.15cc of thoroughly stirred ink was measured using an IGT quantitative meter and added to the ink spreading roller of a Caibang CB225A colorimeter. Spreading was initiated for 70-90 seconds. Using a substrate as the base material, the ink was spread evenly after compaction. After drying, the spread sample was tested using an X-rite CI7800, with a color difference value of ΔE < 1 considered acceptable. Measurement settings: Measurement mode M1, light source / viewing angle D50 / 2°, ΔE mode CIEΔ2000. The results are shown in Table 2. Simultaneously, the fineness, viscosity, and flowability of the ink were measured using a fineness tester, viscous meter, and flowability meter. Finally, its drying properties were determined through a drying experiment. The ink viscosity test measured the force required for separation between the metal and rubber ink rollers; the force measured by the instrument is a relative magnitude. The test results are shown in Table 2.

[0054] The sample was then folded in half again to check for cracks. No cracks were found.

[0055] The ink-printed surface of the sample was pressed firmly with 3M 610 tape, then quickly pulled up at a 90° angle to observe for any ink dripping. The results showed no ink dripping.

[0056] Finally, the ink was printed onto the substrate surface using offset printing, resulting in two different patterns, such as... Figure 2 and Figure 3 As shown.

[0057] Table 1. Raw materials used in the examples.

[0058]

[0059] Table 2 Ink performance parameters of the examples

[0060]

[0061]

[0062] Comparative Example

[0063] Modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano-calcium carbonate, heat stabilizer, and black pigment were mixed and stirred evenly according to the mass percentages in Table 3 to obtain a mixed pigment. The mixed pigment was then left to stand for 6 hours to allow it to fully wet. Next, the mixed pigment was ground in a three-roll mill to achieve a fineness of less than 5 μm, yielding the desired ink.

[0064] The ink was tested as described in the examples, and the results are shown in Table 4.

[0065] The sample was then folded in half again to check for cracks. The results showed that cracks were present.

[0066] The ink-printed surface of the sample was pressed firmly with 3M 610 tape, then quickly pulled up at a 90° angle to observe whether any ink dripped off. The results showed that ink did drip off.

[0067] Finally, the ink is printed onto the substrate surface using offset printing, with the pattern being the same as in the example. Figure 4 and Figure 5 As shown.

[0068] Table 3 Raw materials used in the comparative examples

[0069]

[0070]

[0071] Table 4 Performance parameters of comparative inks

[0072]

[0073] from Figures 2-5 As can be seen, the printed materials provided in this application have a lighter color, while the printed materials provided in the comparative example have a very dark color. This invention incorporates one, two, or even more metallic materials to ensure a certain level of conductivity in the ink, thereby ensuring the sensitive reading and writing effect of the reading pen. This invention significantly reduces the amount of carbon black material used in the ink formula, greatly reducing the ink's color density and the background color of the book, resulting in a more aesthetically pleasing book and enhancing the reader's reading experience.

[0074] As can be seen from Table 2, the printing adaptability of the reading ink provided in this application is also very good.

[0075] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A type of reading ink, characterized in that, Including the following percentages by weight of raw materials: 40-50 wt% modified phenolic resin oil, 20-30 wt% soybean oil, 2-3 wt% drier, 0.5-1 wt% polyethylene wax, 1-1.5 wt% anti-skinning agent, 10-15 wt% nano calcium carbonate, 0.5-1.5 wt% heat stabilizer, 0.5-1 wt% black pigment and 4-5 wt% metallic pigment; The metallic pigment is selected from one or more of copper, zinc, silver, iron, and their oxides; The black pigment is Evonik Degussa SPECIAL BLACK 4A.

2. The reading ink according to claim 1, characterized in that, The particle size of the nano-calcium carbonate is 5000~12000 mesh.

3. The reading ink according to claim 1, characterized in that, The modified phenolic resin oil includes one or more of fatty acid modified phenolic resin, rosin modified phenolic resin, polyamide modified phenolic resin, and epoxy modified phenolic resin.

4. The dot-reading ink according to claim 1, characterized in that, The particle size of the reading ink is <5μm.

5. A method for preparing the ink as described in any one of claims 1 to 4, characterized in that, Includes the following steps: S1: Mix modified phenolic resin oil, soybean oil, drier, polyethylene wax, anti-skinning agent, nano-calcium carbonate, heat stabilizer, black pigment, and metallic pigment, stir evenly, and let stand for a predetermined time to allow the mixed pigments to be fully wetted; and S2: Grind the mixed pigment after the predetermined time to make the mixed pigment reach the predetermined fineness.

6. The preparation method according to claim 5, characterized in that, The stirring time is 30-50 minutes, and the predetermined time is >4 hours.

7. A printed product, characterized in that, It includes a substrate and an ink layer, wherein the ink layer is formed by printing the reading ink as described in any one of claims 1 to 4 onto the substrate.

8. The application of the reading ink according to any one of claims 1 to 4 in reading books.

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